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Explore completing the square as a process for finding complex roots of quadratic equations with a video lesson that pulls together several concepts related to quadratic equations. The example shows how to complete the square with a quadratic equation and then solve using a square root of a negative number. The answer results in a complex solution.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Use the lesson as an extension for upper-level pupils
- Begin with examples that do not result in fractional coefficients
Classroom Considerations
- Learners should already be comfortable with the process of completing the square and imaginary numbers
- This video is hosted on YouTube
Pros
- Shows every step and detailed work
Cons
- The one example shown has fractional coefficients, which may lose some scholars' interest